These inserts can be added to the Tor VM delta ring to customise the shape of the ring into the embrasure. This can be especially helpful to help stabilise the ring into position and prevent band deformation.
There are two varieties available:
No 1.861 - Green narrow add-on wedge
No 1.866 - Blue wide add-on wedge
Add on fixing wedges are manufactured using special silicone rubber, resistant to heat treatment.